State that some viruses can pass across the placenta and affect the fetus
State that some viruses can pass across the placenta and affect the fetus
1 Answer
Questions and Answers For
O Level Biology
234 Questions
1 Answer Identify, on diagrams, the placenta and umbilical cord and describe their functions in relation to the exchange of dissolved nutrients, gases and excretory products between the blood of the mother and the blood of the fetus (structural details are not required)
Identify, on diagrams, the placenta and umbilical cord and describe their functions in relation to the exchange of dissolved nutrients, gases and excretory products between the blood of the mother and the blood of the fetus (structural details are not required)
1 Answer State the functions of the amniotic sac and the amniotic fluid
State the functions of the amniotic sac and the amniotic fluid
1 Answer Describe the early development of the zygote, limited to the formation of a ball of cells (embryo) that becomes implanted in the lining of the uterus
Describe the early development of the zygote, limited to the formation of a ball of cells (embryo) that becomes implanted in the lining of the uterus
1 Answer Explain the roles of follicle-stimulating hormone (FSH), luteinising hormone (LH), oestrogen and progesterone in controlling the menstrual cycle
Explain the roles of follicle-stimulating hormone (FSH), luteinising hormone (LH), oestrogen and progesterone in controlling the menstrual cycle
1 Answer Describe the roles of testosterone and oestrogen in the development and regulation of secondary sexual characteristics during puberty
Describe the roles of testosterone and oestrogen in the development and regulation of secondary sexual characteristics during puberty
1 Answer Compare male and female gametes in terms of size, structure, numbers and motility
Compare male and female gametes in terms of size, structure, numbers and motility
1 Answer Describe the process of germination, including the role of enzymes
Describe the process of germination, including the role of enzymes
1 Answer Investigate and state the environmental conditions that affect germination of seeds, limited to: suitable temperature, water and oxygen
Investigate and state the environmental conditions that affect germination of seeds, limited to: suitable temperature, water and oxygen
1 Answer Relate the features of wind-dispersed fruits and animal-dispersed fruits to their functions
Relate the features of wind-dispersed fruits and animal-dispersed fruits to their functions
1 Answer
Welcome to our Q&A page! Here, you can find answers to frequently asked questions about our courses, features, and other topics related to our content. If you have a question that's not covered, feel free to ask, and we'll be happy to help!
Quiz Leaderboard
1st
Debabrata
Score: 100%
Questions: 20
2nd
Debabrata
Score: 100%
Questions: 20
3rd
Debabrata
Score: 100%
Questions: 20
4th
Sourav
Score: 90%
Questions: 20
5th
Nischal
Score: 90%
Questions: 10
6th
Priyanka
Score: 90%
Questions: 10
7th
Martin
Score: 65%
Questions: 20
8th
Vesnce
Score: 45%
Questions: 20
9th
Hector
Score: 40%
Questions: 10
10th
Sabhyata
Score: 40%
Questions: 10
Top Questions
-
how to prepare polyacrylamide gel electrophoresis
Preparing a PAGE gel involves mixing acrylamide, bis-acrylamide, buffer solution,
Sourav Pan
-
how to interpret polyacrylamide gel electrophoresis results
Interpretation of PAGE results involves comparing sample bands to a
Sourav Pan
-
how does polyacrylamide gel electrophoresis differ from agarose gel
The primary difference between polyacrylamide and agarose gel electrophoresis lies
Sourav Pan
-
what is polyacrylamide gel electrophoresis used for
PAGE is used in molecular biology, biochemistry, and proteomics to
Sourav Pan
-
can you run polyacrylamide gel electrophoresis on ice
Yes, PAGE can be run on ice, and in some
Sourav Pan
-
how to read polyacrylamide gel electrophoresis results
To interpret PAGE results, researchers stain the gel with dyes
Sourav Pan
-
can two dimensional polyacrylamide gel electrophoresis determine 3d
Two-dimensional polyacrylamide gel electrophoresis (2D-PAGE) is used to separate proteins
Sourav Pan
- All Questions
BNO Team
